Event: Division Three

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Opponent Rating Result
Robert Marks 141 ½ - ½
Terry W Walker 131 ½ - ½
Mike J Hollier 135 1 - 0
John Phillips 141 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

137 = (548 + 400 * (1 - 1)) / 4)

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